ICT Systems
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
1
1
Systems
What is a system?
A procedure that involves input, processing and
output.
So, does a system always need a
computer?
No, you can have a manual system too.
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
2
2
Manual system
A card index used in a library. Users can find out
which books the library has if they know the name
of the author as this is how the card index has been
sorted. They could be arranged by ‘Title’ instead.
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
3
3
Manual system
INPUT?
You ask if the library has any books by a
particular author.
PROCESS?
You look through the cards to find what the
library has.
OUTPUT?
From the cards you get a list of titles.
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
4
4
ICT systems
What is ICT? This?
No. ICT is the use and transmission of data to
produce information after processing.
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
5
5
Samples of outputs
Click on these document types to see a sample.
•
•
•
•
•
Mail merged letter
Order
Invoice
Statement
Tax disc
If you are already familiar with these documents,
click here.
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
6
6
Business letter with mail merge
Back to documents menu
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
7
7
Order
Back to documents menu
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
8
8
Invoice
Back to documents menu
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
9
9
Statement
Back to documents menu
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
10
10
Tax disc
Back to documents menu
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
11
11
ICT Systems
So, is this an ICT system?
No. This is just the hardware. An ICT system also
involves people, data, procedures, information and
software.
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
12
12
What is an ICT System
ICT systems are those where the output from the
system goes directly to a human being or into
another ICT system.
At a supermarket checkout, a part of the output is
an itemised receipt, which goes directly to the
customer.
Other outputs, for example, are items bought which
input into another part of the system for stock
control.
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
13
13
Summary
• A system uses INPUT, PROCESS and OUTPUT.
• ICT is the use of data and information.
• ICT systems need people, hardware, software,
data, information and procedures.
AQA ICT AS Level © Nelson Thornes 2008
AQA ICT AS Level © Nelson Thornes 2008
14
14